4-4/4-5 Proving Triangles Congruent

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Presentation transcript:

4-4/4-5 Proving Triangles Congruent Postulates: Side-Side-Side (SSS): If 3 sides of a triangle are congruent to the corresponding 3 sides of another triangle, the triangles are congruent Side-Angle-Side (SAS): If 2 sides and the included angle of a triangle are congruent to the corresponding sides and included angle of another, the triangles are congruent Angle-Side-Angle (ASA): If 2 angles and the included side of a triangle are congruent to the corresponding angles and included side of another, the triangles are congruent Angle-Angle-Side (AAS): If 2 angles and the nonincluded side of a triangle are congruent to the corresponding angles and nonincluded side of another, the triangles are congruent

Showing Triangles are Congruent Ex 1: Show the triangles are congruent using a congruence statement Ex2: Show the triangles are congruent using a congruence statement

More Examples Ex 3: Show the triangles are congruent using congruence statements Ex 4: Show the triangles are congruent using congruence statements

Classwork/Homework P. 269-270 12-19, 27-28 p. 279-280 6-18 even Use congruence statements where it says proofs